#VU104995 NULL pointer dereference in Linux kernel - CVE-2025-21776
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104995
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21776
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the hub_probe() function in drivers/usb/core/hub.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/2240fed37afbcdb5e8b627bc7ad986891100e05d
- https://git.kernel.org/stable/c/5b9778e1fe715700993ce436c152dc3b7df0b490
- https://git.kernel.org/stable/c/62d8f4c5454dd39aded4f343720d1c5a1803cfef
- https://git.kernel.org/stable/c/c3720b04df84b5459050ae4e03ec7d545652f897
- https://git.kernel.org/stable/c/e905a0fca7bff0855d312c16f71e60e1773b393e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.79